Iran is trying to prevent the delimitation of the Caspian Sea for fear of the Trans-Caspian gas pipeline project, Russian political expert Gevorg Mirzayan told on Wednesday.

"If the sea is delimited, the pipeline will be built, and this will put an end to Iran's plans to lay own pipelines from the East to the West and to fill them with own gas," the expert said.

He believes that if Iran is split into parts, it will be much harder to come to terms with, say, Northern Iran or Southern Azerbaijan than it is with the current Iranian authorities.

"The Azeris perfectly know it and are much afraid of the Iranians. Their leader Ilham Aliyev is not a fool and may still have Iran's split in mind when speaking against it. But, on the other hand, he knows that the United States and Israel will go away from Iran after invading it and will leave his country face to face with an enraged neighbor," the expert said.